Detection tool for cathode protection of natural gas pipeline

Abstract

The utility model discloses a detection tool for cathode protection of a natural gas pipeline, and particularly relates to the field of natural gas pipelines, which comprises a natural gas pipeline body and is characterized in that a fixing ring can be sleeved on the outer surface of the natural gas pipeline body and is divided into two parts from the middle part; rotating shafts are arranged at the connected ends of the two fixing rings, buckling mechanisms are arranged at the other connected ends of the two fixing rings, two sliding rails are arranged between every two fixing rings, driving mechanisms are arranged in the sliding rails, and current detection probes are arranged on the surfaces of the driving mechanisms; according to the utility model, the driving mechanisms arranged in the two groups of sliding rails arranged between the fixing rings can drive the current detection probes to move horizontally, so that the two groups of current detection probes can move to the two ends of the natural gas pipeline body, thereby detecting the current difference value of the cathode protection of the natural gas pipeline body.

Description

Technical Field

[0001] The utility model relates to the field of natural gas pipelines, and more specifically, to a detection tool for cathodic protection of natural gas pipelines. Background Art

[0002] Cathodic protection is an electrochemical protection technology used to prevent metal corrosion in dielectrics. The basic principle of this technology is to apply a certain DC current to the metal surface to produce cathodic polarization. When the potential of the metal is negative to a certain potential value, the anodic dissolution process of corrosion will be effectively inhibited, thereby achieving a protective effect.

[0003] After searching, the Chinese patent with application number 202322305693.2 discloses a detection tool for cathodic protection of natural gas pipelines. The sacrificial anode and pipeline, the reference electrode and pipeline, the reference electrode and sacrificial anode are connected by a knife. When the natural potential and anode consumption of the cathodic protection of the natural gas pipeline need to be detected, the knife can be disconnected. If the potential of the pipeline, the protection potential, or the sacrificial anode potential needs to be detected separately, only the corresponding knife needs to be disconnected. In this way, the setting of the knife makes it easier to detect each potential, improves work efficiency, is simple to operate, and avoids the poor contact of the pipeline cathodic protection circuit when it is disassembled and reinstalled, ensuring that the natural gas pipeline is protected during operation.

[0004] In view of the above technology, the inventor believes that when the device detects the cathodic protection of the natural gas pipeline, it can only detect the natural gas pipeline separately, and the detection of the natural gas pipeline requires current detection at both ends of one section, so as to detect the current difference of the cathodic protection of the natural gas pipeline, which can detect the natural gas pipeline more carefully;

[0005] Therefore, in view of the above problems, a detection tool for cathodic protection of natural gas pipelines is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a detection tool for cathodic protection of a natural gas pipeline to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detection tool for cathodic protection of a natural gas pipeline, comprising a natural gas pipeline body, characterized in that a fixing ring can be sleeved on the outer surface of the natural gas pipeline body, the fixing ring is divided into two parts from the middle part, and a rotating shaft is provided at one end where the two parts of the fixing ring are connected, and a snap mechanism is provided at the other end where the two parts of the fixing ring are connected, two groups of slide rails are provided between each two groups of the fixing rings, and a driving mechanism is provided inside the slide rail, and a current detection probe is provided on the surface of the driving mechanism.

[0008] Preferably, the snap mechanism comprises a connecting piece arranged at one end of the fixing ring, threaded holes are provided on the surface of the connecting piece, and bolts are provided between every two groups of threaded holes arranged opposite to each other.

[0009] Preferably, a fixing nut is provided on the surface of the connecting piece located below, and the middle part of the fixing nut corresponds to the threaded hole provided in the connecting piece.

[0010] Preferably, the inner wall of the fixing ring is provided with a plurality of groups of bases, and a friction pad is provided at one end of the base away from the fixing ring, and the friction pad can fit with the outer surface of the natural gas pipeline body.

[0011] Preferably, the driving mechanism includes a screw rod movably arranged inside the slide rail, and the surface of the screw rod is threadedly connected to the threaded hole opened by the current detection probe, a through hole is opened at one end of the slide rail, a bearing is arranged inside the through hole, a connecting column is arranged inside the inner ring of the bearing, and one end of the connecting column is connected to the screw rod, and a rotating disk is arranged at the other end of the connecting column.

[0012] Preferably, a through hole is opened on the surface of the fixing ring, and another set of bearings is arranged inside the through hole, and the two sets of bearings are arranged opposite to each other.

[0013] Technical effects and advantages of the utility model:

[0014] Compared with the prior art, the utility model is fixed on the outer surface of the natural gas pipeline body by a fixing ring, so that the operator can set the current detection probe on the surface of the natural gas pipeline body to detect the cathodic protection of the natural gas pipeline body. At the same time, the driving mechanism arranged in the two sets of slide rails arranged between the fixing rings can drive the current detection probe to move horizontally, so that the two sets of current detection probes can be moved to the two ends of the natural gas pipeline body, thereby detecting the current difference of the cathodic protection of the natural gas pipeline body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the surface of the fixing ring of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the buckle mechanism of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the driving mechanism of the utility model.

[0019] The accompanying drawings are marked as follows: 1. natural gas pipeline body; 2. fixing ring; 3. snap mechanism; 31. connecting piece; 32. bolt; 33. fixing nut; 4. slide rail; 5. driving mechanism; 51. screw rod; 52. connecting column; 53. rotating disk; 6. base; 7. friction pad; 8. rotating shaft; 9. current detection probe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] As attached Figure 1 and Figure 2 A detection tool for cathodic protection of a natural gas pipeline is shown, comprising a natural gas pipeline body 1, a fixing ring 2 can be sleeved on the outer surface of the natural gas pipeline body 1, the fixing ring 2 is divided into two parts from the middle part, and a rotating shaft 8 is provided at one end where the two parts of the fixing ring 2 are connected, and a snap mechanism 3 is provided at the other end where the two parts of the fixing ring 2 are connected, two groups of slide rails 4 are provided between each two groups of the fixing rings 2, and a driving mechanism 5 is provided inside the slide rail 4, and a current detection probe 9 is provided on the surface of the driving mechanism 5.

[0023] Among them: the fixing ring 2 is fixed on the outer surface of the natural gas pipeline body 1, so that the operator can set the current detection probe 9 on the surface of the natural gas pipeline body 1 to detect the cathodic protection of the natural gas pipeline body 1. At the same time, the driving mechanism 5 set in the two groups of slide rails 4 set between the fixing rings 2 can drive the current detection probe 9 to move horizontally, so that the two groups of current detection probes 9 can be moved to the two ends of the natural gas pipeline body 1, so as to detect the current difference of the cathodic protection of the natural gas pipeline body 1.

[0024] Embodiment 2

[0025] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working method, as described below:

[0026] like Figure 3As shown, as a preferred embodiment; the snap mechanism 3 includes a connector 31 arranged at one end of the fixing ring 2, a threaded hole is provided on the surface of the connector 31, and a bolt 32 is provided between each two sets of oppositely arranged threaded holes. Furthermore, the threaded holes provided in the connector 31 are threadedly connected with the bolts 32, so that the two sets of connectors 31 can be connected to each other, thereby fixing the fixing ring 2 on the surface of the natural gas pipeline body 1.

[0027] like Figure 3 As shown, as a preferred embodiment; a fixing nut 33 is provided on the surface of the connecting member 31 located below, and the middle part of the fixing nut 33 corresponds to the threaded hole opened by the connecting member 31. Furthermore, the fixing nut 33 provided on the surface of the connecting member 31 is threadedly connected with the bolt 32, so that the connection state of the fixing ring 2 is more stable.

[0028] like Figure 2 As shown, as a preferred embodiment; a plurality of groups of bases 6 are provided on the inner wall of the fixing ring 2, and a friction pad 7 is provided on one end of the base 6 away from the fixing ring 2, and the friction pad 7 can fit with the outer surface of the natural gas pipeline body 1. Furthermore, the base 6 and the friction pad 7 provided on the inner wall of the fixing ring 2 are connected to the surface of the natural gas pipeline body 1, and the friction force is used to prevent the natural gas pipeline from sliding during detection.

[0029] like Figure 4 As shown, as a preferred embodiment; the driving mechanism 5 includes a screw rod 51 movably arranged inside the slide rail 4, and the surface of the screw rod 51 is threadedly connected to the threaded hole opened by the current detection probe 9, and a through hole is opened at one end of the slide rail 4, a bearing is arranged inside the through hole, a connecting column 52 is arranged inside the inner ring of the bearing, and one end of the connecting column 52 is connected to the screw rod 51, and the other end of the connecting column 52 is provided with a rotating disk 53. Furthermore, since the connecting column 52 is arranged inside the bearing, when the rotating disk 53 rotates, it can drive the screw rod 51 to rotate, thereby pushing the current detection probe 9 to move horizontally.

[0030] like Figure 4 As shown, as a preferred embodiment; a through hole is opened on the surface of the fixed ring 2, and another set of bearings is arranged inside the through hole, and the two sets of bearings are arranged opposite to each other. Furthermore, since the bearings arranged on the fixed ring 2 correspond to the bearings arranged on the slide rail 4, the connecting column 52 is connected to the two sets of bearings at the same time, so that the driving mechanism 5 can be installed inside the slide rail 4.

[0031] The working process of the utility model is as follows:

[0032] When the utility model is used, it is fixed on the outer surface of the natural gas pipeline body 1 by the fixing ring 2, so that the operator can set the current detection probe 9 on the surface of the natural gas pipeline body 1 to detect the cathodic protection of the natural gas pipeline body 1. At the same time, the driving mechanism 5 set in the two groups of slide rails 4 set between the fixing rings 2 can drive the current detection probe 9 to move horizontally, so that the two groups of current detection probes 9 can be moved to the two ends of the natural gas pipeline body 1, so as to detect the current difference of the cathodic protection of the natural gas pipeline body 1.

[0033] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0034] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A detection tool for cathodic protection of a natural gas pipeline, comprising a natural gas pipeline body (1), characterized in that: The outer surface of the natural gas pipeline body (1) can be sleeved with a fixing ring (2), the fixing ring (2) is divided into two parts from the middle part, and a rotating shaft (8) is provided at one end where the two fixing rings (2) are connected, and a snap mechanism (3) is provided at the other end where the two fixing rings (2) are connected, and two groups of slide rails (4) are provided between each two groups of the fixing rings (2), and a driving mechanism (5) is provided inside the slide rail (4), and a current detection probe (9) is provided on the surface of the driving mechanism (5).

2. A detection tool for cathodic protection of a natural gas pipeline according to claim 1, characterized in that: The buckle mechanism (3) comprises a connecting piece (31) arranged at one end of the fixing ring (2), threaded holes are provided on the surface of the connecting piece (31), and bolts (32) are provided between every two groups of threaded holes arranged opposite to each other.

3. A detection tool for cathodic protection of natural gas pipelines according to claim 2, characterized in that: A fixing nut (33) is provided on the surface of the connecting piece (31) located at the bottom, and a middle portion of the fixing nut (33) corresponds to a threaded hole provided in the connecting piece (31).

4. A detection tool for cathodic protection of natural gas pipelines according to claim 1, characterized in that: The inner wall of the fixing ring (2) is provided with a plurality of groups of bases (6), and a friction pad (7) is provided at one end of the base (6) away from the fixing ring (2), and the friction pad (7) can fit with the outer surface of the natural gas pipeline body (1).

5. The detection tool for cathodic protection of natural gas pipelines according to claim 1, characterized in that: The driving mechanism (5) comprises a screw rod (51) movably arranged inside the slide rail (4), and the surface of the screw rod (51) is threadedly connected to a threaded hole provided in the current detection probe (9), a through hole is provided at one end of the slide rail (4), a bearing is provided inside the through hole, a connecting column (52) is provided inside the inner ring of the bearing, one end of the connecting column (52) is connected to the screw rod (51), and the other end of the connecting column (52) is provided with a rotating disk (53).

6. A detection tool for cathodic protection of natural gas pipelines according to claim 1, characterized in that: A through hole is provided on the surface of the fixing ring (2), and another set of bearings is arranged inside the through hole, and the two sets of bearings are arranged opposite to each other.

Images